/* ── Reset & base ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --slate: #1a2332;
  --slate-light: #243044;
  --cream: #f9f6ef;
  --green: #00c4a0;
  --green-dim: rgba(0, 196, 160, 0.15);
  --text: #e8e4dc;
  --text-muted: #8a9ab5;
  --border: rgba(255,255,255,0.08);
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--slate);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 35, 50, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header nav {
  display: flex;
  gap: 32px;
}

.site-header nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.site-header nav a:hover { color: #fff; }

/* ── Hero ──────────────────────────────────────────── */
.hero {
  padding: 96px 0 80px;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 20px;
  background: var(--green-dim);
  padding: 4px 12px;
  border-radius: 2px;
}

.hero-copy h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.lede {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat {}

.stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Signal diagram ─────────────────────────────────── */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.signal-diagram {
  position: relative;
  width: 340px;
  height: 340px;
}

.signal-node {
  position: absolute;
}

.node-center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.node-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--green-dim);
  border: 1px solid var(--green);
  border-radius: 6px;
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--green);
}

.node-1 { top: 0; left: 50%; transform: translateX(-50%); text-align: center; }
.node-2 { top: 18%; right: 0; text-align: right; }
.node-3 { bottom: 28%; right: 0; text-align: right; }
.node-4 { bottom: 8%; left: 50%; transform: translateX(-50%); text-align: center; }
.node-5 { bottom: 28%; left: 0; text-align: left; }

.node-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  background: rgba(26,35,50,0.9);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 6px;
  white-space: nowrap;
}

.node-connector {
  width: 1px;
  height: 40px;
  background: var(--border);
  margin: 0 auto;
}

.c1 { height: 50px; }
.c2 { width: 60px; height: 1px; margin: auto 0; position: absolute; top: 35%; right: 90px; }
.c3 { width: 60px; height: 1px; margin: auto 0; position: absolute; bottom: 40%; right: 90px; }
.c4 { height: 30px; }
.c5 { width: 60px; height: 1px; margin: auto 0; position: absolute; bottom: 40%; left: 90px; }

/* ── Section shared ─────────────────────────────────── */
.section-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 14px;
}

.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 640px;
  margin-bottom: 56px;
}

/* ── How it works ──────────────────────────────────── */
.how-it-works {
  padding: 88px 0;
  background: var(--slate);
  border-bottom: 1px solid var(--border);
}

.process-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 64px;
}

.step {
  display: flex;
  gap: 20px;
}

.step-number {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--green-dim);
  line-height: 1;
  flex-shrink: 0;
  width: 52px;
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Features ──────────────────────────────────────── */
.features {
  padding: 88px 0;
  background: var(--slate-light);
  border-bottom: 1px solid var(--border);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--slate);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
  transition: border-color 0.2s;
}

.feature-card:hover { border-color: rgba(0,196,160,0.3); }

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--green-dim);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Outcomes ──────────────────────────────────────── */
.outcomes {
  padding: 88px 0;
  background: var(--slate);
  border-bottom: 1px solid var(--border);
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.outcome {}

.outcome-metric {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1;
  margin-bottom: 12px;
}

.outcome-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ── Pricing ───────────────────────────────────────── */
.pricing {
  padding: 96px 0;
  background: var(--slate-light);
  border-bottom: 1px solid var(--border);
}

.pricing-sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 48px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 28px;
  max-width: 1100px;
}

.pricing-card {
  background: #d6eaff;
  border: 1.5px solid #a3c7f0;
  border-radius: 12px;
  padding: 36px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card--featured {
  background: #c2ddf7;
  border-color: #7ab8f5;
  box-shadow: 0 0 0 4px rgba(0, 196, 160, 0.15), 0 8px 32px rgba(0, 196, 160, 0.12);
}

.plan-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green);
  color: var(--slate);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: 20px;
}

.plan-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate);
  opacity: 0.6;
  margin-bottom: 10px;
}

.plan-price {
  margin-bottom: 10px;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--slate);
  letter-spacing: -0.03em;
  line-height: 1;
}

.price-period {
  font-size: 1rem;
  color: var(--slate);
  opacity: 0.55;
  font-weight: 400;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--slate);
  opacity: 0.7;
  margin-bottom: 16px;
}

.savings-callout {
  display: inline-block;
  background: var(--green);
  color: var(--slate);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.plan-features {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-features li {
  font-size: 0.88rem;
  color: var(--slate);
  padding: 6px 0;
  padding-left: 22px;
  position: relative;
  opacity: 0.8;
}

.plan-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  background: var(--green);
  border-radius: 50%;
}

.plan-features li::after {
  content: '';
  position: absolute;
  left: 4px;
  top: calc(50% - 2px);
  width: 6px;
  height: 3px;
  border-left: 1.5px solid var(--slate);
  border-bottom: 1.5px solid var(--slate);
  transform: rotate(-45deg);
}

.btn-outline {
  display: inline-block;
  padding: 12px 24px;
  border: 2px solid var(--slate);
  color: var(--slate);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 6px;
  text-align: center;
  transition: background 0.2s, color 0.2s;
}

.btn-outline:hover {
  background: var(--slate);
  color: #fff;
}

.btn-primary {
  display: inline-block;
  padding: 12px 24px;
  background: var(--green);
  color: var(--slate);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: 6px;
  text-align: center;
  transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.85; }

.trial-note {
  font-size: 0.75rem;
  color: var(--slate);
  opacity: 0.5;
  text-align: center;
  margin-top: 12px;
}

.pricing-compare {
  margin-top: 32px;
}

.compare-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.6;
}

@media (max-width: 600px) {
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing { padding: 64px 0; }
  .pricing-card { padding: 28px 24px; }
  .price-amount { font-size: 2.4rem; }
}
.closing {
  padding: 96px 0;
  background: var(--slate);
  text-align: center;
}

.closing h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.closing p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.footer-links {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .signal-diagram { width: 280px; height: 280px; }
  .process-steps { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .outcomes-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .site-header nav { display: none; }
  .hero { padding: 64px 0 56px; }
  .hero-stats { gap: 24px; }
  .stat-number { font-size: 1.4rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .outcomes-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .outcome-metric { font-size: 2.4rem; }
}